Speed-changing and transmission gearing.



Patented July 23, 1912.

n. P. COLLINS. SPEED GHANGING AND TRANSMISSION GEARING.

APPLICATION FILED DEC. 29, 1910. l ,Q33,@82

. 6 3 h W p Z ,v \"A I w g? g g a 7 m H i A Z i y 4 s 2 A [NVENTOR Attorney [TNESSES .of the sleeve 1 is the reverse of which overhangs the hub of DENNIS P. COLLINS,

Specification of Letters Patent. Application filed December 28, 1910.

raraivr enrich.

OF PETTSB URGH, PENNSYLVANIA.

SPEED-CHANGING AND TRANSIVIISSION GEARING;

Patented July ashore. Serial No. 599,866.

To all whom it concern:

Be it known that I, DENNIS l". COLLINS, of Pittsburgh, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful LUPI'OVGIDGIIlSi Speed-Changing and Transmission Gearing; and I do hereby declare the following to be a .full, clear, and exact description of the invention, such as will enable others skilled in tllOrfU't to which it appertains to make and use-the same.

ltl-yinvention relates to an improvement in speed changing and transmission gear mg, and it consists in the parts and combination of parts as will be more fully explained and pointer-Pd outin the claims.

he accompanying drawing is a View partly in elevation of my improved gearing.

1 represents the rear axle sleeve which carries the driven gears of the series. The portions of the sleeve that are embraced by the sliding clutches 3 and i are angular in cross section, while the remaining portions are cylindrical and form bearings for the several driven gears.

Loosely mounted on a cylindrical portion gear 2, and mounted to rotate on the hub 2 of the latter is the larger reverse gear 5, the hub 5 gear 2. The and 5 are provided outer ends of hubs 2 respectively with-clutcn'teeth 6 and? with which the teeth of the sliding clutch 3 mesh. The clutch has an angular bore conforming in size and shape to the angular portion of the sleeve 1, and is adapted to slide thereon between the teeth 6 and 7 of the hubs of gears 2 and 5 and lock either gear, to the sleeve. The hub or body of the clutch 3 projects beyond the end of the hub 5 as shown so as to be engaged by suitable clutch actuating devices. Hub 5 isinoUnted in and supported by the roller bearing 6, which latter operates hold. the gear 5 in its position to be engaged by the drive pinions on the drive shaft. clutch 3 is shown disengaged from the teeth of both hubs, and when so disengaged the gears run loosely on the shaft when the driving shaft is rotating.

Loosely mounted one cylindrical portion of sleeve 1, is the fast speed gear12, and mounted on the hub 13 of the latter is the hub of slow speed gear 14. This hub of the slow speed gear is also mounted in the antifriction'bearing 15, and is provided at its In the drawing the,

outer end'w'ith inwardly teeth adapted to be.

clut h at. The hub 13 of the fast speed gear is also provided at its outer end with out wardly projecting teeth adapted to be engag-ed by teeth on the clutch 4. The clutch sleeve pro JGCl'S through the outer end of the hub of the slow speed gear 14, so as to be engaged by suitable clutch actuating devices. This clutch t is so constructed that the teeth thereof may rest in a neutral position between the clutch teeth of the speed gears 12 and 14-, and when so placed both gears will run loosely on their respective bearings. By shifting the clutch 4 outwardly toward the slow speed gear, the latter will be locked to the sleeve and by now moving the clutch the fast speed gear, the slow speed gear will be disconnected from the sleeve, and by continuing the movement of the clutch to the right, the fast speed gear will be clutched to the sleeve.

The reverse gear 5 and the slow speed gear 14 are of the same size, and the fast speed gearand reverse gear 2 are of the same size, and are located betweenjand are. concealed by the gears 5 and 14. By the construction. shown, the smaller gears of each set are supported against outward displacement by the are similarly supported by the anti-friction bearings.

18 is a drive shaft friction bearings mojecting clutch en a 'edb the teeth of a: b y

mounted in the anti- 19, and supported at its inner end against a thrust bearing 20 car ried by a suitable housing. This shaft'is supported by one or more of the anti-friction bearings 19, and is provided with two fixed bevel pinions 21 and 22, the former of wvhiclris larger than pinion 22, and meshes with the fast speed gear 12 and also with the reverse gear 2, while the smaller pinion 22 meshes With the reverse gear 5 and also with the sloW speed gear 14-. It will therefore be seen that the speed and reverse gears are directly driven, and

, driving shaftlS is rotating. 1 The sleeve 1 is hollow for the passage of thesections 23 of the axle, andjeach axle bevel pinion 2% both of which are in engageinent with the bevel pinion 25 mounted on the journals 26. carried by the sleeve 1. The interior of the sleeve is enlarged in line with the driving shaft, for the reception of larger gears and the latter all rotate when the section-is provided at its inner end with a to the right, or toward.

. 30 disabled, the fast speed forward gears 12 with the reverse gear.

, Q tose se this-differential gearing 24 and 25,:and is positely ,disposed gears arranged in pairs,

made in two sections joined at such en the gears of each set being of different diamlarged portion, hence when thediffei'entia] eters, and the gears of each pair being of gears are assembled, and thetwo sections of the same diameteiyland clutches for eachcset the sleeve secured together, the gears and. of gears, of a drive shaft, a pinion thereon 7 their axles will be secured against the posfor each pair of gears and meshing uith sibility of longitudinal displacement. same and a series of connected-idle pinions Mounted on the pintle 39 fixed to the each idle pinion meshing with apair ohousing. or other support, or integral with gears. v

10 such pinion which may be mounted in bear- 4. The combination with a sleeve a'secfion ings carried by the housing, are the secondshaft therein and differential gearing c'onary drive or idle pinions 40 and 41, the necting the sleeveand two sections of the former of which meshes with the vgears 5 shaft, of two setsof oppositely disposed and 14 while the latter meshes with the gears loosely mounted on the sleeve, the said 15 gears 2 and 12' and: operates to main tain gears being arranged in pairs, a clutch for the two sets-of gears in positive alinement eachset of gears, a drive shaft, a pinion with the driving pinions and thus eliminate thereon for eachpair of gears and connected to a large extent the noise incidental to the idle pinions, each meshing with aapair of springing apart of these gears at the. pitch gears. Y r 4 T 29 line when the power is applied. Again by 5. The combination withga member .to be 35 this arrangement increased strength is obdriven, a plurality of forward drive'ge'ars tained due to the fact-that power is applied and a reverse gear thereon, and'clutches for to the driven gears at diametrically oppolocking the several gears to said member, site points, and in the event the teeth of of a drive shaft, a plurality of pinions there- 25 any one of the gears or pinions should be "on, each meshing with one vofthe forward 0 broken off, the power would be transmitted drive gears and one also meshing with a 'to the clutched gears by the remaining reverse gear, and a pluralit'y'of connected gears and pinions. Thus, if gearr14. were idle pinions, each meshing-with one forward locked to the sleeve and pinion 22 should be drive gear and one of them also meshing I and fast speed reverse gear, 2, will be ro- 6. The combination with axlesections, a tated by pinion 21, and as these gears are sleeve mounted thereon and'means connect in mesh with idle pinion 41, and the latter ing the sleeve and axle sections, of a pluintegral with idlepinion 40, meshing wlth rality of'forward drive gears and Universe 5 gear 14, the latter will be positively driven gear on said sleeve, clutches for loclzin'gthe by the idle pinion, several gears to the sleeve, a drive shaft, a

This improvement is designed particuplurality of connected pinions thereon each larly for use on railroad cars operated by meshingwith one of the forward drive gears gasolene or other similar fuel, and also for and one also meshing with the reverse gear,

40 au m i es, ut t an e us d with any and a plurality of connected idle pinions,

kind of motor and on any machine or vehleach meshing with one of the forward drive cle employing changeable speed and regears and one of them also meshing with verse transmission caring. the reverse gear.

Having 'fully escribed my invention 7.,The combination withadrivin sleeve,

I hat I claim as new and desire to secure by two t of oppositely dispose I gears aietters-Patent, is mounted on said sleeve, and, a clutchfor 1. The combinationwith a driving sleeve, h t f gears, f d i l ft, t i two sets of oppositely disposed gears ions thereon, each pinion meshing-without; mounted on said sleeve, and a clutch for gear of each set, and two idle pinions'e'ach so each set of gears, of a drive shaft, two meshing with one gear of each Set. pinions thereon, each pinion meshing with 8. In apparatus of the class described, a one gear of each set and two connected idle driving shaft, an axle or shaft to be driven,

p nions each meshing with one gear of each a air ofv'driving pinions of different size set. connected with the driving shaft, a pair- 55 2. I The combination with a driving sleeve, of gears meshing with the pinions, a second. '120 two sets of oppositely disposed gears pair of pinions similar to the first meshmounted on said sleeve, the two sets of gears ing with the said gears, and a third gear facing each other, and a clutch for each set meshing with one of the pinions of each of gears, of a drive shaft, pinions .fixed pair and means fonconnecting the gears- 60 thereto, each pinion meshing with one gear with the shaft to be driven, each of said 125 of each set and;a set of connected idle pinpinions and gears being utilized to transmit ions disposed opposite the drive pinions, power at all times. i each idle pinion meshing with one gear of 9. In apparatus of the class described, a each set. driving shaft, an aide or shaft to be driven,

65 3'. The'combination with twosets of of a pair of driving pinions of different size 1 0 and gears being utilized to transmit power' at all times, said second pair of pinions being arranged at a pointdiametrically opposite the first pair of pinions.

10. In apparatus of the class described, a drive shaft, an axle or shaft to be driven, a pair of pinions of different size connected with the drive shaft, a casing, a high and low speed gear bearing in the casing, a reversing gear having a bearing in the-casing and meshing with one of the pinions, means for connecting the gears to the driven shaft or axle, and .a second pair of pinions mounted in the casing and meshing one with the high speed gear and the other with the low speed and reversing gear.

11. In combination in apparatus of the class-described, a drive shaft, a driven shaft or axle, a pair of pinions connected with, the. .dr1ve shaft to move in unison, said p1n10ns being of different size, a p'a1r of gears meshing with the said pinions, means for clutching either gear to the driven shaft or axle, and a second pair of p1n10ns connected to move in unison and meshing with the said gears.

12. The combination with an axle, a plurality of oppositely disposed gears, and clutches, of a drive shaft, a series of rigidlyconnected main drive pinions meshing with the oppositely disposed gears, and connected secondary drive pinions also meshing with said gears whereby each gear assists in driving the other.

In testimony whereof, I have signed this specification in the presence of two sub scribing witnesses.

DENNIS P. COLLINS. Witnesses W. T. MAR'rERs'rEEK, G; H. GERDING.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0. 

